RIM Chiefs Defend PlayBook Against Critics as Debut Approaches - BusinessWeek http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNGffhN1HkCM1c-BYc5qmLFSmC14eQ&url=http://www.businessweek.com/news/2011-04-15/rim-chiefs-defend-playbook-against-critics-as-debut-approaches.html

RIM Chiefs Defend PlayBook Against Critics as Debut Approaches - BusinessWeek http://ping.fm/qqTIM